Polymer Technology Which of the following is a copolymer? PVC Bakelite Teflon Polythene PVC Bakelite Teflon Polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? Tricresyl phosphate Esters of phthalic acid Ethylene glycol Stearic acid estors Tricresyl phosphate Esters of phthalic acid Ethylene glycol Stearic acid estors ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties. Elastometric Thermoplastic Thermosetting Brittleness Elastometric Thermoplastic Thermosetting Brittleness ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Pickout the wrong statement. Polymers made of more than one monomer is called copolymer or mixed polymer Polymers made of only one monomer is called homopolymer Vulcanised rubber is more elastic than natural rubber The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Polymers made of more than one monomer is called copolymer or mixed polymer Polymers made of only one monomer is called homopolymer Vulcanised rubber is more elastic than natural rubber The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Most commonly used rubber vulcanisation agent is Alumina Bromine Platinum Sulphur Alumina Bromine Platinum Sulphur ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are 250°C and 10 kgf/cm² 50°C and 3 - 4 kg/cm² 50°C and 1 kgf/cm² 250°C and 1 kgf/cm² 250°C and 10 kgf/cm² 50°C and 3 - 4 kg/cm² 50°C and 1 kgf/cm² 250°C and 1 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
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